resizing?

[Maarten Lankhorst]

static void Resize(CaptureBox * capBox, LPBYTE output, LPBYTE input)
{
   if (!capBox->swresize) {
      int depth = capBox->bitDepth / 8;
      int inoffset = 0, outoffset = (capBox->height-1) * capBox->width * 
depth;
      int ow = capBox->width * depth;
      while (outoffset >= 0) {
         int x;
         outoffset -= ow;
         for (x = 0; x < ow; x++)
            output[outoffset + x] = input[inoffset + x];
         inoffset += ow;
      }
   } else {
      FIXME("Software scaling not supported, I got no clue how and 
no-one wants to help so adding gray instead...\n");
      memset(output, 128, capBox->outputwidth * capBox->outputheight * 
capBox->bitDepth / 8);
   }
}

I want to copy from a raw bitmap stream which is (capBox->width) x 
(capBox->height) (24 bits) to (capBox->outputwidth) x 
(capBox->outputheight) (also 24 bits), if you can argue about HAVE_V4L2 
this should be easy :) I *really* need this fixed, any info is greatly 
appreciated.. gluScaleImage seemed ideal, but a qcap linking to glu32 
would never make it to the wine source.. so a more windows-compliant(TM) 
solution(R) is required, since I'm a disaster in win32 programming best 
would be instant code of which i only need to change variable names or 
something (yet ironically enough i know too much of com, directshow & 
devenum already :-\ )

THANKS!!

Maarten

[Robert Shearman]

Maarten Lankhorst wrote:
> I want to copy from a raw bitmap stream which is (capBox->width) x 
> (capBox->height) (24 bits) to (capBox->outputwidth) x 
> (capBox->outputheight) (also 24 bits), if you can argue about 
> HAVE_V4L2 this should be easy :) I *really* need this fixed, any info 
> is greatly appreciated.. gluScaleImage seemed ideal, but a qcap 
> linking to glu32 would never make it to the wine source.. so a more 
> windows-compliant(TM) solution(R) is required, since I'm a disaster in 
> win32 programming best would be instant code of which i only need to 
> change variable names or something (yet ironically enough i know too 
> much of com, directshow & devenum already :-\ )

This shouldn't be needed. A filter should any resizing, but I don't 
remember there being a resize filter in DirectShow.

Rob

[Maarten Lankhorst]

Robert Shearman wrote:
> Maarten Lankhorst wrote:
> > I want to copy from a raw bitmap stream which is (capBox->width) x 
> > (capBox->height) (24 bits) to (capBox->outputwidth) x 
> > (capBox->outputheight) (also 24 bits), if you can argue about 
> > HAVE_V4L2 this should be easy :) I *really* need this fixed, any info 
> > is greatly appreciated.. gluScaleImage seemed ideal, but a qcap 
> > linking to glu32 would never make it to the wine source.. so a more 
> > windows-compliant(TM) solution(R) is required, since I'm a disaster 
> > in win32 programming best would be instant code of which i only need 
> > to change variable names or something (yet ironically enough i know 
> > too much of com, directshow & devenum already :-\ )
>
> This shouldn't be needed. A filter should any resizing, but I don't 
> remember there being a resize filter in DirectShow.
>
> Rob

As far as I can tell, there is no resize filter, I checked graphedit and 
couldn't find one in the filter list even with native quartz, so I'm 
still interested in software resizing, I could just do clipping or 
filling with nulls, but there should be a better way, if I can't find it 
though I'll use clip/zero fill, my webcam doesn't need it but it would 
be nice for others...